code: def rand_haralick():
      f = 255 * np.random.random((128, 128))
      f = f.astype(np.uint8)
      f = mh.features.haralick(f)
      return f.mean(0)
  
imports: import numpy
  from mahotas.features import texture
  import mahotas
  import mahotas.features._texture
  import pytest
label_desc: Use image node_id 17 for calling a global function with example usage: rand_haralick() and returns: f